Synapsids

Question 1

what are the shared mammalian traits?

Answer 1

• hard palate
• hair/fur
• endothermy
• mammary glands
• facial musculature
• nocturnal
• aveloar lungs

Question 2

what does mammals include

Answer 2

• monotremes
• marsupials
• eutherians/placentals

Question 3

what is the defining features of mammals?

Answer 3

mammary glands

Question 4

what are the 2 evolutionary theories of hair/fur

Answer 4

• insulation
• sensory

Question 5

why is mammalian respiration just as efficient to other groups even though the air mixes

Answer 5

there is a VERY large surface area compared to non mammals and they have the smallest red blood cells so gas exchange is vey efficient

Question 6

what makes monotremes different than plancetals and marsupials

Answer 6

they lay eggs and locate through hair instead of nipple